/Engine/Source/Runtime/CoreUObject/Public/UObject/UObjectBaseUtility.h
Finds the most-derived class which is a parent of both TestClass and this object's class.
const [UClass](API\Runtime\CoreUObject\UObject\UClass) * FindNearestCommonBaseClass ( const [UClass](API\Runtime\CoreUObject\UObject\UClass) * TestClass ) const